"You know you are in trouble when the developer defines the problem as one between usability and graphics. This is like wondering if you can design a chess set with so much pointless adornment that it becomes impossible to differentiate a rook from a queen."
Elsewhere, Gamasutra talks about the most attractive genres for game publishers. There is probably no need to mention that strategy didn't make the list. "The four "super-genres" accounted for over 73% in combined revenue for fiscal year 2005. "